Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Generalizing the concept of hierarchical control. Each level of the hierarchy from cerebral cortex (Cx) to spinal cord to musculoskeletal plant performs a regulatory function for the level above and acts as a controller for the level below. The label inside each feedback loop indicates a typical manifestation of the function at each level. See Discussion.
